Torsional behavior of RC beams strengthened with carbon fiber reinforced polymer composites

Silva, Leandro Ferreira; Filho, Emil de Souza Sánchez; Filho, Júlio Jerônimo Holtz Silva

doi:10.1177/1369433220988625

Cited by 8 publications

(4 citation statements)

References 14 publications

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“…The application of fiber-reinforced polymer (FRP) in the strengthening of reinforced concrete (RC) members in various ways and under different load applications (e.g. Akid et al, 2021; Ali and Forth 2021; Chen et al, 2007; Dhindsa et al, 2021; Dias and Barros 2013; Hollaway et al, 2008; Kian et al, 2021; Li et al, 2021a; Majed et al 2021; Mostakhdemin et al, 2021; Muhammad et al, 2016; Nie et al, 2022; Ozbakkaloglu and Vincent 2014; Rahimi and Hutchinson 2001; Silva et al, 2021; Teng and Lam 2004; Tobbi et al, 2014; Yuan and Hu 2021) has become prevalent in the last few decades, on account of many advantages of FRP such as high strength, good corrosion resistance and lightweight (e.g. Bakis et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Shear strengthening of RC beams with NSM FRP. I: Review of strength models

Jedrzejko

Zhang

Yan

et al. 2022

Advances in Structural Engineering

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Near-surface mounted (NSM) fiber-reinforced polymer (FRP) technique is known as a promising alternative to the externally bonded (EB) FRP technique for strengthening reinforced concrete (RC) members, on account of its many advantages such as high bond efficiency with concrete and good durability. Shear strengthening of RC beams by near-surface mounting the FRP bars/strips into the concrete cover on beam sides is one of the most prevalent applications of NSM FRP. Abundant experimental studies have been conducted to investigate the behaviour of NSM FRP shear strengthened beams, and many strength models for predicting the contribution of NSM FRPs to the shear capacity of the beam have been proposed. The present paper presents a comprehensive review of these strength models, in which all the models collected from the existing literature are first classified into three categories based on their used approach and then summarized and discussed. This paper not only aims to bring a deep understanding of the existing strength models for NSM FRP shear strengthened RC beams, but also provides a background and basis for the assessment of these models by using the newly-generated experimental database in the companion paper.

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Section: Introductionmentioning

confidence: 99%

Shear strengthening of RC beams with NSM FRP. I: Review of strength models

Jedrzejko

Zhang

Yan

et al. 2022

Advances in Structural Engineering

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“…Fiber-reinforced polymer (FRP) was used in civil engineering over the few decades, mainly as a strengthening material for reinforced concrete (RC) structures (e.g. Rahimi and Hutchinson 2001; Teng and Lam 2004; Hollaway and Teng 2008; Dias and Barros 2013; Ozbakkaloglu and Vincent 2014; Tobbi et al, 2014; Muhammad et al, 2016; Oehlers et al, 2016; Akid et al, 2021; Ali and Forth 2021; Dhindsa et al, 2021; Kian et al, 2021; Li et al, 2021; Majed et al 2021; Mostakhdemin Hosseini et al 2021; Silva et al, 2021; Yuan and Hu 2021). The use of near-surface mounted (NSM) FRP for strengthening RC beams owns many advantages such as higher bond efficiency with concrete and better durability, compared to the traditional externally bonded (EB) FRP technique (De Lorenzis and Teng 2007; Seracino et al, 2007b; Bilotta et al 2011, 2015).…”

Section: Introductionmentioning

confidence: 99%

Shear strengthening of RC beams with NSM FRP. II: Assessment of strength models

Yan

Zhang

Jedrzejko

et al. 2022

Advances in Structural Engineering

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The application of near-surface mounted (NSM) fiber-reinforced polymer (FRP) for shear strengthening of RC beams has attracted abundant research in the past few decades, and a number of strength models for predicting the contribution of NSM FRPs to the shear capacity of strengthened beam have been proposed. In the first of these two companion papers, a total of 12 strength models of NSM FRP shear strengthened RC beams collected from the existing literature have been comprehensively reviewed, while the present paper aims to provide an objective assessment of these models. To this end, the experimental results of 196 RC beams strengthened in shear with NSM FRP bars/strips are collected from the existing literature, as the database for the assessment. The comparisons between the experimental results and predictions by these strength models reveal that the existing strength models all fail to give accurate predictions. The reasons for the inaccurate predictions of these models are also analyzed.

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“…The tensile strength of fiber-reinforced plastic (FRP) composites is several times higher than that of ordinary steel bars, and it also has good corrosion resistance and can be processed into various shapes according to the actual engineering needs [ 5 , 6 ]. Carbon fiber composite materials and glass fiber composite materials are the most widely used to restrain concrete columns, beams and plates and repair damaged concrete structures, which have achieved remarkable results [ 7 , 8 , 9 , 10 ]. However, these synthetic fibers also have some disadvantages, such as high price and non-recyclability, which make them neither economic nor conducive to environmental protection and sustainable development [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Study on Axial Compression Behavior of Concrete Short Columns Confined by Flax/Glass Fiber Hybrid-Reinforced Epoxy Resin Composites

2022

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In this study, we aimed to explore the effect of concrete short columns confined by flax/glass fiber hybrid-reinforced epoxy resin (FFRP/GFRP) composites. Taking the same fiber hybrid ratio and different paving orders as parameters, analysis of the axial compressive mechanical properties of eight groups of FFRP/GFRP composite-confined concrete short columns, including one group of flax fiber-reinforced epoxy resin (FFRP) composite-confined concrete short columns and one group of unconstrained concrete short column, was conducted. The effects of different layering sequences on failure modes, load–displacement curves, energy dissipation ductility and the stress–strain relationship of hybrid composite-confined concrete short columns were analyzed. The results show that the axial compression failure modes of FFRP/GFRP composite-confined concrete short columns with the same hybrid ratio and different paving sequences were basically the same, and the CC-H6 group was the most prominent. The ultimate bearing capacity and axial deflection were 91.05% and 11.49% higher than those of the control group (CC-FFRP), and the energy dissipation coefficient was also the largest, at 9.79. The failure trend of the stress–strain curve of the confined concrete short column specimens was basically the same, and the stress and axial strain of the members were increased by 247.9~292.5% and 486.7~701.0%, respectively.

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Torsional behavior of RC beams strengthened with carbon fiber reinforced polymer composites

Cited by 8 publications

References 14 publications

Shear strengthening of RC beams with NSM FRP. I: Review of strength models

Shear strengthening of RC beams with NSM FRP. I: Review of strength models

Shear strengthening of RC beams with NSM FRP. II: Assessment of strength models

Study on Axial Compression Behavior of Concrete Short Columns Confined by Flax/Glass Fiber Hybrid-Reinforced Epoxy Resin Composites

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